Oh I forgot that COLLADA2GLTF (2.0) can export to binary as well. So the full command to get a glb is: COLLADA2GLTF-bin.exe -i model.dae -b
I loaded both the gltf and glb in Cesium successfully. You might have to open an issue in the ol-cesium project.
I’ll email you a link to the converted model.